Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-43863

Quick assessment

Affected
mutt mutt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

mutt是mutt开源的一个从终端发送邮件的命令行电子邮件客户端。 mutt 2.3.2之前版本存在安全漏洞，该漏洞源于crypt-gpgme.c中data_object_to_stream存在无限循环。

CVSS 3.7 · Low EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
mutt mutt < 2.3.2 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-43863

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
mutt before 2.3.2 has an infinite loop in data_object_to_stream in crypt-gpgme.c.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对函数返回值的检查不正确
Source: CVE Program / CVE List V5
Vulnerability Title
mutt 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
mutt是mutt开源的一个从终端发送邮件的命令行电子邮件客户端。 mutt 2.3.2之前版本存在安全漏洞，该漏洞源于crypt-gpgme.c中data_object_to_stream存在无限循环。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
mutt mutt 0 ~ 2.3.2 -

II. Public POCs for CVE-2026-43863

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-43863

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-43863 (1)

Same Patch Batch · mutt · 2026-05-04 · 6 CVEs total

CVE-2026-43862 3.7 LOW mutt 安全漏洞
CVE-2026-43860 3.7 LOW mutt 安全漏洞
CVE-2026-43859 3.7 LOW mutt 安全漏洞
CVE-2026-43861 3.7 LOW mutt 安全漏洞
CVE-2026-43864 2.5 LOW mutt 代码问题漏洞

IV. Related Vulnerabilities

Same product: mutt
Same vendor: mutt
Same weakness: CWE-253

V. Comments for CVE-2026-43863

No comments yet

Leave a comment